210 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Salvin (Proc. Zool. See. London, 1870, p. 194) was the first to 

 report this race from Chiriqui and Veraguas from specimens col- 

 lected by Arce. Those in the Salvin-Godman collection (Sclater, Cat. 

 Birds Brit. Mus., vol. 15, 1890, p. 189) are from Calobre, Chitra, and 

 Calovevora, Veraguas. (The one listed under "g. Ad. sk. southern 

 slope of the Volcano of Chiriqui (Arce)" is a specimen of Gymno- 

 cichla nudiceps erratilis.) In Bocas del Toro, W. W. Brown, Jr., 

 secured a female June 12, 1901, at 600 meters on the trail between 

 Boquete and Chiriqui Grande. Another was taken by Monniche at 

 Camp Holcomb (1525 meters) June 26, 1933, on this same trail. 

 The U.S. National Museum has two males collected by R. Hinds at 

 730 meters on the head of the Rio Changuena, September 10 and 14, 

 1961. 



In Costa Rica, Slud (Bull. Amer. Mus. Nat. Hist., vol. 128, 1964, 

 p. 219) recorded this bird as found in groups, the two sexes together, 

 moving rapidly through the undergrowth, often following ant 

 swarms. "The long, rounded tail ... is constantly raised slowly 

 and lowered quickly." The call is a "series of six to eight resonant, 

 musical, equal-valued, urgent or excited beeps. The bird also makes 

 a high-pitched chatter like that of exsul." 



Nothing is recorded of its nesting. 



MYRMECIZA IMMACULATA BERLEPSCHI Ridgway 



Myrmecisa berlepschi Ridgway, Proc. Biol. Soc. Washington, vol. 22, April 17, 

 1909, p. 74. (Chimbo, northwest Ecuador.) 



Characters. — Bill smaller ; male with white area on wings more 

 extensive ; female, lighter, somewhat brighter brown. 



Measurements. — Males (10 from Darien, Colombia, and Ecuador), 

 wing 80.0-83.4 (81.5), tail 67.3-76.6 (72.2), culmen from base 21.8- 

 24.8 (22.9), tarsus 33.8-37.2 (35.1) mm. 



Females (10 from Darien and Choco, Colombia), wing 76.5-81.4 

 (78.8), tail 66.7-81.4 (78.8), culmen from base 20.6-22.7 (19.4, 

 average of 9), tarsus 33.1-35.7 (34.1) mm. 



Resident. Uncommon in the forests of Cerro Pirre and Cerro 

 Tacarcuna (to 575 meters), Darien. 



This interesting bird, little known, was found first by E. A. Gold- 

 man, above Cana at 900 to 1060 meters elevation. Griscom (Bull. 

 Mus. Comp. Zool., vol. 69, 1929, p. 168) records three males and a 

 female collected by Benson in this same area in 1928. It is found also 

 on the lower levels of Cerro Tacarcuna, where W. B. Richardson col- 

 lected it near the old village site at 1900 meters on the Rio Tacarcuna 

 in March and April 1915. 



